Answer:
The equation of the perpendicular line:
2x + 5y = ╼ 15
What is the measure of the unknown angle? n 120°
thanks again everyone
Points are
(10,-8)(-5,-7)Slope:-
[tex]\\ \rm\rightarrowtail m=\dfrac{-7+8}{-5-10}[/tex]
[tex]\\ \rm\rightarrowtail m=-\dfrac{1}{15}[/tex]
∠A and ∠B are complementary. The measure of ∠A is 21°.
What is the measure of ∠B?
Enter your answer in the box.
<B be y
We know that complementary angles have sum 90°[tex]\\ \sf\longmapsto y+21=90[/tex]
[tex]\\ \sf\longmapsto y=90-21[/tex]
[tex]\\ \sf\longmapsto y=69°[/tex]
<A=69°
Answer:
The measure of ∠B is 69°
Step-by-step explanation:
Given :
=> ∠A + ∠B = 90°
=> 21° + ∠B = 90°
=> ∠B = 90°- 21°
=> ∠B = 69°
Area and perimeter of the triangle
pls answer is right on my math
Step-by-step explanation:
1. parallel 2. perpendicular 3. interescting
4. parallel 5. perpendicular
IV. 1/2 = 2/4 1/3 = 2/6 2/6 = 4/12
1/2 = 4/8 1/3 = 4/12 2/6 = 1/3
can you please mark my answer brainliest
What is the solution to the equation x2 = 16? Explain.
Answer:
x = ±4
Step-by-step explanation:
x^2 = 16
Take the square root of each side
sqrt(x^2) = ±sqrt(16)
x = ±4
NO LINKS!!
Two sensors are spaced 700 feet apart along the approach to a small airport. When an aircraft is nearing the airport, the angle of elevation from the first sensor to the aircraft is 20°, and from the second sensor to the aircraft is 15°. Determine how high the aircraft is at this time.
Answer:
711 ft (nearest foot)
Step-by-step explanation:
Create two equations using trig ratios and the information given (refer to the attached diagram). Equate the equations and solve.
First equation
Let y = horizontal distance between sensor 1 and the aircraft
Let h = height of aircraft above the ground
Using the tangent trig ratio:
[tex]\mathsf{\tan(\theta)=\dfrac{opposite \ side}{adjacent \ side}}[/tex]
Given:
angle = 20°side opposite the angle = hside adjacent the angle = y[tex]\implies \mathsf{\tan(20)=\dfrac{h}{y}}[/tex]
Rearrange to make y the subject:
[tex]\implies \mathsf{y=\dfrac{h}{\tan(20)}}[/tex]
Second equation
Let y + 700 = horizontal distance between sensor 2 and the aircraft
Let h = height of aircraft above the ground
Using the tangent trig ratio:
[tex]\mathsf{\tan(\theta)=\dfrac{opposite \ side}{adjacent \ side}}[/tex]
Given:
angle = 15°side opposite the angle = hside adjacent the angle = y + 700[tex]\implies \mathsf{\tan(15)=\dfrac{h}{y+700}}[/tex]
Rearrange to make y the subject:
[tex]\implies \mathsf{y=\dfrac{h}{\tan(15)}-700}[/tex]
Now equate the 2 equations and solve for h:
[tex]\implies \mathsf{\dfrac{h}{\tan(20)}=\dfrac{h}{\tan(15)}-700}}[/tex]
[tex]\implies \mathsf{700=\dfrac{h}{\tan(15)}-\dfrac{h}{\tan(20)}}[/tex]
[tex]\implies \mathsf{700=\dfrac{h\tan(20)-h\tan(15)}{\tan(15)\tan(20)}}[/tex]
[tex]\implies \mathsf{700=\dfrac{\tan(20)-\tan(15)}{\tan(15)\tan(20)}h}[/tex]
[tex]\implies \mathsf{h=\dfrac{700\tan(15)\tan(20)}{\tan(20)-\tan(15)}}[/tex]
[tex]\implies \mathsf{h=710.9678247...}[/tex]
Therefore, the height of the aircraft is 711 ft (nearest foot)
Write a linear equation given the point and slope. (-7, 13); slope = -2
Answer:
y = -2x + 1
Step-by-step explanation:
The linear equation is generally written in y = mx + b form. Since m (the value of the slope) is already given, only the value of b must be determined. To do this, plug in x, y, and m for their values in the equation to get:
13 = -2 (-7) + b
Then, simplify.
13 = 14 + b
b = -1
Once you find the b value, plug everything back in and get y = -2x + 1.
A set of high school student heights are normally distributed with a mean of 161 centimeters and a standard deviation of 15 centimeters. Mikio is a high school student with a height of 191 centimeters. What proportion of student heights are higher than Mikio's height?
Answer:
0.0228
Step-by-step explanation:
Trust <3 like fr I just did it on Khan
6.1/5(12b+5) for b = 5/6
Answer:
Step-by-step explanation:
6.1 / 5 ( 12b + 5 )
b = 5/6
by substituting,
6.1 / 5 ( 12 × 5/6 + 5 )
1.22 × 15
= 18.3
Hope this helps
plz mark as brainliest!!!!!!!
Stay safe!!
Ms. Kim has 1 full class plus 8 extra students going on the field trip. if she has 40 students going on the field trip, how many students are there in her full class?
Answer:
32 students
Step-by-step explanation:
what is the value of 5/z when z =2?
Answer:
[tex]z = 2. \\ 5 \div z \\ 5 \div 2 \\ 2.5[/tex]
2.5 is the correct answer .Thank you ☺️☺️
HElP!!!!!!!plss I don’t know if I’m right or wrong
C(n)=1/500 n^2-n +200 where is n is the number. does the cost have a minimum or maximum value explain
Answer:
minimum
Step-by-step explanation:
The sign of the leading coefficient of a quadratic tells you whether its graph opens upward or downward. Here, the sign of 1/500 is positive, so the graph opens upward. The function will have a minimum.
_____
Additional comment
For even-degree polynomials (quadratic = degree 2), the general shape of the curve will be ∪ or ∩. The latter will result from a negative leading coefficient.
For odd-degree polynomials, the general shape of the curve will be / or \. Again, the latter results from a negative leading coefficient.
These facts can help you identify the end-behavior of a polynomial function.
Michael ran 450 miles this month preparing for a race. 40% of the miles
he ran were during bad weather. How many miles did he run during bad
weather?
Answer:
180 miles
Step-by-step explanation:
You must find 40% of 450 and you can make the of into an x (multiplication symbol) like so:
40% x 450
Now, percent's are fractions, and 100% is equal to one whole or 1. To make 40% a fraction, simply just place a decimal in front of the 4, like so:
.40 or 0.40 or 0.4 or .4
Now place that in the equation:
0.40 x 450
Solve:
450.00
x 0.40
___________
180.00
^
(!Important! !Always bring down the decimal in the exact place it was at in first place!)
Check:
180 = 40%
450 = 100%
(To get 450 you must multiply 100 by 4.5, therefore you multiply 40 by 4.5 to get 180)
Answer:
Michael ran 180 miles in bad weather.
wich one do you think is greater 4x 32/5 or 3x42/5 how can yu tell without multplying explain
Answer:4x 32/5
Step-by-step explanation:
If we look at it, we know that 4 and 32 is more than 3x42. Btw, 3x42 is 126 and 4 times 32 is 128.
Nicholas sold pounds of shrimp in 4 hours. So, he sells shrimp at a rate of pounds of shrimp per hour. At this rate, he would sell pounds of shrimp in 9 hours.
WILL RECIEVE BRAINLIST
Answer:
9 pounds of shrimp will be sold in 9 hours i think.
i dont realy understand the way u wrote it but pls put brainliest
Answer:
yea i thik hes right
Step-by-step explanation:
Can someone help me with this real quick!
Answer:
519.50
Step-by-step explanation:
A = P [tex](1 + r)^{n}[/tex]
A = 300[tex](1 + .04)^{14}[/tex]
A = 300(1.7316764476)
A = 519.502934281
A = 519.50
To make 5 pizzas, 1/2 cup of flour is used a. How much flour is needed to make one pizza? b.. How many cups of flour are needed to make 1 dozen pizzas? (1 dozen - 12) c. How many pizzas can you make with 5 2/3 cups of flour?
Answer:
for a single pizza 1/10 a cup
for 12 pizzas 1 1/5 a cup
you can make 56 pizzas with 5 2/3 cups.
Step-by-step explanation:
for 5 pizzas you need 1/2 cup of flour, so to find out how much you'll need for a single pizza you'll need to divide it with 5. 1/2÷5=1/10
for a dozen pizzas you'll need to multiply that with 12. 1/10x12=12/10=1 1/5
Then to find out how many can we make with 5 2/3 cups we'll divide it with that 1/10
56/10÷1/10= 56 pizzas
4,5,6,6,7,7,8,8,8,8,8,9,9
What is the mean and range of the number sequence?
Answer:
The mean is 7 and the range is 5
Step-by-step explanation:
To find the mean, just add up the scores and divide the total by the number of scores.
To find the range, subtract the lowest value from the highest value.
What is the area of the shaded sector?
O 24 TT
O 45TT
O 72TT
O 576TT
c:72tt
[tex]\textit{area of a sector of a circle}\\ A=\cfrac{\pi \theta r^2}{360}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=24\\ \theta =45 \end{cases}\implies A=\cfrac{\pi (45)(24)^2}{360}\implies A=72\pi[/tex]
If you spend $55 for transportation and clear $250 a month, what percent of your income do you spend on transportation?
Round to the nearest tenth.
A. 4.5%
B. 18.0%
C. 20.0%
D. 22.0%
Answer:
d
Step-by-step explanation:
55÷250×100=22.0
hence d
mel read 7 books, write a division equation to find
number of books read
Volume with Fractional Length - Quiz. Level F
If the box holds 24 of these sugar cubes, what is
the total volume of the box?
24 in
12 in
6 in
3 in
What is the equation for the line that passes through the points (4, 2) and (0, 6) ?
can someone help please
Answer:
I think it might be A, it seems most reasonable. I'm probably wrong tho
Step-by-step explanation:
Answer:
it is D
Step-by-step explanation:
just multiplay
There are 18 students in the math club.
Of the 18 students, 1/6 have red hair. How many of the students have red hair?
Part b: of the 18 students, 4/6 have brown hair. How many of the students have brown hair?
Part c:
What is the relationship do you notice between the number of students with brown hair and the number of students with red hair?
a:1/6×18/1=18/6 when simplified is 3
b:4/6×18/1=72/6 when simplified is 12
c.The relationship between the number of students with brown hair and the number of students with red hair is that they are equivalent to one another.
5. Which of the following best describes a negative linear association?*
A Variables have no relation to each other when plotted.
B As one variable increases so does the other
CA data set that includes both negative and positve numbers
D As one variable decreases, the other increases
D. As one variable decreases, the other increases.
A negative linear association means that as one variable decreases, the other variable increases. This indicates an inverse relationship between the two variables.
As the value of one variable decreases, the value of the other variable tends to increase consistently and vice versa. This pattern can be observed when plotting the data points on a scatter plot, where the points tend to form a downward sloping line.
Option A is incorrect because a negative linear association implies a clear relationship between the variables, unlike no relation. Option B is incorrect because it describes a positive linear association, where both variables increase together.
Option C is incorrect because the presence of both negative and positive numbers does not necessarily indicate a negative linear association. The key characteristic of a negative linear association is the inverse relationship between the variables as described in option D.
for such more question on variable
https://brainly.com/question/18042457
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Find the vertex of the graph of the function
f(x)= -2x^2-16x-34
Answer Choices:
-2,-4
-4,-2
3,5
5,3
Answer:
(-4,-2)
Step-by-step explanation:
A line passes through the point (-9,-6) and has a slope of -(2)/(3).
Answer:
[tex]\displaystyle y + 6 = -\frac{2}{3}(x + 9)[/tex]
Explanation:
In the Point-Slope formula, [tex]\displaystyle y - y_1 = m(x - x_1),[/tex]−C gives you the OPPOCITE TERMS OF WHAT THEY REALLY ARE, so be very careful with those minus symbols.
I am joyous to assist you at any time.